Custom section is not filtering as per logged in user in portal

Hi everyone,

I’ve added my custom section “Services” for external users, and it is now visible in the portal workplace. However, the list currently displays all records, instead of filtering them based on the logged-in portal user.

In my Services entity, I have a lookup field called Site Contact that references the Contact object. I would like the portal to show only those service records where the Site Contact matches the currently logged-in portal user.

Could someone please guide me on how to implement this filtering on the portal section list?
 

Thank you!